GST Calculator – Calculate Tax Amount on Any Price

This GST Calculator lets you calculate the tax amount on any product or service instantly. Enter the original price and the applicable GST rate, 5%, 12%, 18%, or 28%, to get the GST amount and the total price. You can also reverse the calculation to find the base price from a GST-inclusive amount.

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GST Calculator

Base Amount (₹)
₹1,000₹50 Lakh
Select GST Rate (%):

GST Calculation Results

₹1,18,000
Base Amount
GST Tax (18%)
₹1,18,000
Total Price (Incl. GST)
₹1,00,000
Net Base Price
₹18,000
Total GST Tax
Tax Breakdown
CGST (9.0%)₹9,000
SGST (9.0%)₹9,000
Total GST Payable₹18,000
1₹

What is a GST Calculator?

A GST Calculator is an online tool that helps individuals and businesses calculate the Goods and Services Tax payable on any product or service. By entering the original price and selecting the applicable GST rate, the calculator instantly shows the GST amount and the total price, whether you need a GST-inclusive or GST-exclusive figure.

How to Use GST Calculator – 3 Step Flow

Streamline your finances with an easy, automated process — calculate, plan, and achieve your financial goals.

1STEP

Enter the price

Type the amount you want to calculate GST on. Select whether this is the base price (excluding GST) or the total price (including GST).

2STEP

Select the GST rate

Choose the applicable rate: 5%, 12%, 18%, or 28%. The calculator will apply the correct rate to your entered amount.

3STEP

Read your result

The calculator instantly displays the GST amount and the final price. For intra-state transactions, it also shows the CGST and SGST split.

How is GST Calculated?

GST Exclusive Formula (Adding GST): GST Amount = (Original Cost × GST Rate) ÷ 100 Total Amount = Original Cost + GST Amount GST Inclusive Formula (Removing GST): GST Amount = Original Cost − [Original Cost ÷ (1 + GST Rate ÷ 100)] Net Amount = Original Cost − GST Amount

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Frequently Asked Questions

A GST Calculator is an online tool that calculates the Goods and Services Tax amount on a product or service. Enter the price and GST rate, and it instantly returns the tax amount and the total price, saving time and reducing manual calculation errors.

Multiply the original price by the GST rate and divide by 100. For example, GST on ₹500 at 18% = ₹90, making the total ₹590. To remove GST from an inclusive price, use: Original Price = Total × 100 ÷ (100 + GST Rate).

India has four main GST rate slabs: 5%, 12%, 18%, and 28%. Essential goods attract 0%, while luxury and sin goods fall under 28%. Most services and electronics are taxed at 18%. Rates may change following GST Council decisions.

A GST-exclusive price is the base amount before tax is added. A GST-inclusive price already includes the tax. Use this calculator to switch between both, enter the inclusive amount and select "Remove GST" to find the original base price.

For intra-state transactions, GST is split equally between CGST (Central GST) and SGST (State GST). For inter-state transactions, a single IGST (Integrated GST) is charged at the full rate. The total tax burden is the same in both cases.

This calculator applies the standard GST formula and is accurate for most product and service categories. However, certain goods have specific GST rules, cess applicability, or composition scheme rates. Consult a tax professional for complex or sector-specific transactions.